/* color palette from <https://github.com/vuejs/theme> */
:root {
    --vt-c-white: #ffffff;
    --vt-c-white-soft: #f8f8f8;
    --vt-c-white-mute: #f2f2f2;
  
    --vt-c-black: #181818;
    --vt-c-black-soft: #222222;
    --vt-c-black-mute: #282828;
  
    --vt-c-indigo: #2c3e50;
  
    --vt-c-divider-light-1: rgba(23, 219, 82, 0.848);
    --vt-c-divider-light-2: rgba(226, 32, 32, 0.943);
    --vt-c-divider-dark-1: rgba(84, 84, 84, 0.65);
    --vt-c-divider-dark-2: rgba(84, 84, 84, 0.48);
  
    --vt-c-text-light-1: var(--vt-c-indigo);
    --vt-c-text-light-2: rgba(60, 60, 60, 0.66);
    --vt-c-text-dark-1: var(--vt-c-white);
    --vt-c-text-dark-2: rgba(235, 235, 235, 0.64);
  }
  
  /* semantic color variables for this project */
  :root {
    --color-background: var(--vt-c-white);
    --color-background-soft: var(--vt-c-white-soft);
    --color-background-mute: var(--vt-c-white-mute);
  
    --color-border: var(--vt-c-divider-light-1);
    --color-border2: var(--vt-c-divider-light-2);
    --color-border-hover: var(--vt-c-divider-light-1);
  
    --color-heading: var(--vt-c-text-light-1);
    --color-text: var(--vt-c-text-light-1);
  
    --section-gap: 160px;
  }
  
  html,
  body,
  div,
  span,
  applet,
  object,
  iframe,
  h1,
  h2,
  h3,
  h4,
  h5,
  h6,
  p,
  blockquote,
  pre,
  a,
  abbr,
  acronym,
  address,
  big,
  cite,
  code,
  del,
  dfn,
  em,
  img,
  ins,
  kbd,
  q,
  s,
  samp,
  small,
  strike,
  strong,
  sub,
  sup,
  tt,
  var,
  b,
  u,
  i,
  center,
  dl,
  dt,
  dd,
  ol,
  ul,
  li,
  fieldset,
  form,
  label,
  legend,
  table,
  caption,
  tbody,
  tfoot,
  thead,
  tr,
  th,
  td,
  article,
  aside,
  canvas,
  details,
  embed,
  figure,
  figcaption,
  footer,
  header,
  hgroup,
  menu,
  nav,
  output,
  ruby,
  section,
  summary,
  time,
  mark,
  audio,
  video {
    margin: 0;
    padding: 0;
  }
  button {
    outline: none;
    border: none;
    cursor: pointer;
  }
  /* HTML5 display-role reset for older browsers */
  article,
  aside,
  details,
  figcaption,
  figure,
  footer,
  header,
  hgroup,
  menu,
  nav,
  section {
    display: block;
  }
  
  body {
    width: 100%;
    height: 100%;
    margin: 0;
    font-family: 'Helvetica Neue', Helvetica, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei',
      '微软雅黑', Arial, sans-serif;
    line-height: inherit;
    -moz-osx-font-smoothing: grayscale;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizelegibility;
  }
  
  img {
    vertical-align: middle;
  }
  ol,
  ul {
    list-style: none;
  }
  blockquote,
  q {
    quotes: none;
  }
  blockquote:before,
  blockquote:after,
  q:before,
  q:after {
    content: '';
    content: none;
  }
  
  table {
    border-collapse: collapse;
    border-spacing: 0;
  }
  
  a {
    text-decoration: none;
    color: #333;
  }
  
  a:link,
  a:visited {
    color: #333;
  }
  
  a:hover,
  a:active {
    color: #ff6700;
  }
  
  /* 预置class */
  .cf::after {
    content: '';
    display: block;
    clear: both;
  }
  
  .fl {
    float: left;
  }
  
  .fr {
    float: right;
  }
  
  .border-box {
    box-sizing: border-box;
  }
  
  .container {
    width: 1200px;
    min-width: 1200px;
    margin: 0 auto;
  }
  
  .shadow1 {
    -webkit-box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.15);
  }
  .shadow2 {
    -webkit-box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
    box-shadow: 0 15px 30px rgba(0, 0, 0, 0.1);
  }
  
  .ul-fl li {
    float: left;
  }
  
  .m-r10 {
    margin-right: 10px;
  }
  .m-l10 {
    margin-left: 10px;
  }
  
  .m-t10 {
    margin-top: 10px;
  }
  
  .m-b10 {
    margin-bottom: 10px;
  }
  
  .m-x-auto {
    margin: 0 auto;
  }
  
  .animate__animated.animate__fadeInRight {
    --animate-duration: 0.2s;
  }